Water retaining tray



FIG. 1 is a front perspective view of the water retaining tray;

FIG. 2 is a top plan view;

FIG. 3 is a front view;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a side view, both sides being mirror images of the other. 

The ornamental design for a water retaining tray, as shown and described. 